VARIABLE VALVE SYSTEM OF INTERNAL COMBUSTION ENGINE

摘要

A variable valve system of an internal combustion engine includes a first mechanism that varies an operation angle of an intake valve in accordance with a conversion actuation force applied thereto and a second mechanism that varies an operation angle of an exhaust valve in accordance with the conversion actuation force applied thereto, wherein the first and second mechanisms force mechanically the intake and exhaust valves to take smaller and larger operation angles respectively when the conversion actuation forces are not applied to the first and second mechanisms respectively.

主权项

1. A variable valve system of an internal combustion engine, comprising:
an intake valve operation angle varying mechanism that varies an operation angle of an intake valve in accordance with a conversion actuation force applied thereto; and an exhaust valve operation angle varying mechanism that varies an operation angle of an exhaust valve in accordance with the conversion actuation force applied thereto, wherein the intake valve operation angle varying mechanism forces mechanically the intake valve to take a smaller operation angle when receiving no conversion actuation force; and wherein the exhaust valve operation angle varying mechanism forces mechanically the exhaust valve to take a larger operation angle when receiving no conversion actuation force.